Warning: This API is deprecated and will be removed in a future
version of TensorFlow after
the replacement is stable.
LMDBDataset
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Creates a dataset that emits the key-value pairs in one or more LMDB files.
The Lightning Memory-Mapped Database Manager, or LMDB, is an embedded binary
key-value database. This dataset can read the contents of LMDB database files,
the names of which generally have the `.mdb` suffix.
Each output element consists of a key-value pair represented as a pair of
scalar string `Tensor`s, where the first `Tensor` contains the key and the
second `Tensor` contains the value.
LMDB uses different file formats on big- and little-endian machines.
`LMDBDataset` can only read files in the format of the host machine.
Inherited Methods
From class
java.lang.Object
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boolean
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equals(Object arg0)
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final
Class<?>
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getClass()
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int
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hashCode()
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final
void
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notify()
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final
void
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notifyAll()
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String
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toString()
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final
void
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wait(long arg0, int arg1)
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final
void
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wait(long arg0)
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final
void
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wait()
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Public Methods
public
Output<Object>
asOutput
()
Returns the symbolic handle of a tensor.
Inputs to TensorFlow operations are outputs of another TensorFlow operation. This method is
used to obtain a symbolic handle that represents the computation of the input.
public
static
LMDBDataset
create
(Scope scope, Operand<String> filenames, List<Class<?>> outputTypes, List<Shape> outputShapes)
Factory method to create a class wrapping a new LMDBDataset operation.
Parameters
| scope |
current scope |
| filenames |
A scalar or a vector containing the name(s) of the binary file(s) to be
read. |
Returns
- a new instance of LMDBDataset
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Last updated 2022-02-12 UTC.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2022-02-12 UTC."],[],[],null,["# LMDBDataset\n\npublic final class **LMDBDataset** \nCreates a dataset that emits the key-value pairs in one or more LMDB files.\n\n\nThe Lightning Memory-Mapped Database Manager, or LMDB, is an embedded binary\nkey-value database. This dataset can read the contents of LMDB database files,\nthe names of which generally have the \\`.mdb\\` suffix.\n\n\nEach output element consists of a key-value pair represented as a pair of\nscalar string \\`Tensor\\`s, where the first \\`Tensor\\` contains the key and the\nsecond \\`Tensor\\` contains the value.\n\n\nLMDB uses different file formats on big- and little-endian machines.\n\\`LMDBDataset\\` can only read files in the format of the host machine.\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n### Public Methods\n\n|-------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| [Output](/api_docs/java/org/tensorflow/Output)\\\u003cObject\\\u003e | [asOutput](/api_docs/java/org/tensorflow/op/core/LMDBDataset#asOutput())() Returns the symbolic handle of a tensor. |\n| static [LMDBDataset](/api_docs/java/org/tensorflow/op/core/LMDBDataset) | [create](/api_docs/java/org/tensorflow/op/core/LMDBDataset#create(org.tensorflow.op.Scope,%20org.tensorflow.Operand\u003cjava.lang.String\u003e,%20java.util.List\u003cjava.lang.Class\u003c?\u003e\u003e,%20java.util.List\u003corg.tensorflow.Shape\u003e))([Scope](/api_docs/java/org/tensorflow/op/Scope) scope, [Operand](/api_docs/java/org/tensorflow/Operand)\\\u003cString\\\u003e filenames, List\\\u003cClass\\\u003c?\\\u003e\\\u003e outputTypes, List\\\u003c[Shape](/api_docs/java/org/tensorflow/Shape)\\\u003e outputShapes) Factory method to create a class wrapping a new LMDBDataset operation. |\n| [Output](/api_docs/java/org/tensorflow/Output)\\\u003c?\\\u003e | [handle](/api_docs/java/org/tensorflow/op/core/LMDBDataset#handle())() |\n\n### Inherited Methods\n\nFrom class [org.tensorflow.op.PrimitiveOp](/api_docs/java/org/tensorflow/op/PrimitiveOp) \n\n|------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------|\n| final boolean | [equals](/api_docs/java/org/tensorflow/op/PrimitiveOp#equals(java.lang.Object))(Object obj) |\n| final int | [hashCode](/api_docs/java/org/tensorflow/op/PrimitiveOp#hashCode())() |\n| [Operation](/api_docs/java/org/tensorflow/Operation) | [op](/api_docs/java/org/tensorflow/op/PrimitiveOp#op())() Returns the underlying [Operation](/api_docs/java/org/tensorflow/Operation) |\n| final String | [toString](/api_docs/java/org/tensorflow/op/PrimitiveOp#toString())() |\n\nFrom class java.lang.Object \n\n|------------------|---------------------------|\n| boolean | equals(Object arg0) |\n| final Class\\\u003c?\\\u003e | getClass() |\n| int | hashCode() |\n| final void | notify() |\n| final void | notifyAll() |\n| String | toString() |\n| final void | wait(long arg0, int arg1) |\n| final void | wait(long arg0) |\n| final void | wait() |\n\nFrom interface [org.tensorflow.Operand](/api_docs/java/org/tensorflow/Operand) \n\n|-------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------|\n| abstract [Output](/api_docs/java/org/tensorflow/Output)\\\u003cObject\\\u003e | [asOutput](/api_docs/java/org/tensorflow/Operand#asOutput())() Returns the symbolic handle of a tensor. |\n\nPublic Methods\n--------------\n\n#### public [Output](/api_docs/java/org/tensorflow/Output)\\\u003cObject\\\u003e\n**asOutput**\n()\n\nReturns the symbolic handle of a tensor.\n\nInputs to TensorFlow operations are outputs of another TensorFlow operation. This method is\nused to obtain a symbolic handle that represents the computation of the input.\n\n\u003cbr /\u003e\n\n#### public static [LMDBDataset](/api_docs/java/org/tensorflow/op/core/LMDBDataset)\n**create**\n([Scope](/api_docs/java/org/tensorflow/op/Scope) scope, [Operand](/api_docs/java/org/tensorflow/Operand)\\\u003cString\\\u003e filenames, List\\\u003cClass\\\u003c?\\\u003e\\\u003e outputTypes, List\\\u003c[Shape](/api_docs/java/org/tensorflow/Shape)\\\u003e outputShapes)\n\nFactory method to create a class wrapping a new LMDBDataset operation. \n\n##### Parameters\n\n| scope | current scope |\n| filenames | A scalar or a vector containing the name(s) of the binary file(s) to be read. |\n|-----------|-------------------------------------------------------------------------------|\n\n##### Returns\n\n- a new instance of LMDBDataset \n\n#### public [Output](/api_docs/java/org/tensorflow/Output)\\\u003c?\\\u003e\n**handle**\n()\n\n\u003cbr /\u003e"]]
